India · State public service commissions (e.g. Kerala PSC) · civil-service · unverified source
Unverified.
Several states recruit dairy extension officers, dairy farm instructors, quality control officers and technical officers for their dairy development departments and milk federations through their public service commissions. Post names, eligibility and syllabi differ by state and were not verified for this track.
Official source: https://www.keralapsc.gov.in/
Original questions written to this exam's published syllabus and pattern. Not past papers.
1. Which milking species ranks second in world milk output?
A. Water buffalo
Buffalo give around a seventh of world milk, mostly in South Asia, with Egypt, China, Nepal and Italy as other producers. Goats, sheep and camels each contribute only a few per cent or less.
Dairy Industry & Milk Production Systems · World milk production by region and species: cow, buffalo, goat, sheep, camel, yak
2. Which breed is known for small size and milk rich in fat, often around 5%?
C. Jersey
Jersey milk is rich in fat and protein with larger fat globules and more carotene.
Dairy Animal Science · Dairy breeds of cattle and buffalo worldwide
3. Under two-axis pricing a dairy pays ₹400 per kg fat and ₹250 per kg SNF. What is paid for 1,000 kg of milk with 4.5% fat and 8.6% SNF?
A. ₹39,500
Fat = 45 kg × 400 = ₹18,000; SNF = 86 kg × 250 = ₹21,500; total ₹39,500. ₹42,575 prices all solids at the average rate; ₹45,650 swaps the two rates; ₹3,950 multiplies the percentages by the rates without converting to kilograms.
Market Milk Processing · Milk reception, testing and payment
4. Sandesh is made by:
B. Cooking chhana with sugar to a soft or firm consistency
Naram pak is soft, kada pak firm.
Traditional & Indigenous Dairy Products of the World · Chhana and chhana-based sweets: rasogolla, sandesh
5. A dairy discharges 100,000 L of whey a day with a BOD of 40,000 mg/L. Taking 60 g BOD per person per day, what is the population equivalent?
B. 66,667 people
BOD load = 100,000 L × 40 g/L = 4,000 kg/day; population equivalent = 4,000,000 g ÷ 60 g = 66,667. 4,000 is the load in kilograms, not people; 67 slips a factor of 1,000; 66,666,667 leaves the concentration in mg instead of g.
Whey & Dairy By-product Utilisation · Whey disposal problem: BOD and COD
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